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Over the last decade, the Internet has become one of the most popular vehicles facilitating a variety of communication and information-sharing tasks worldwide. Its growing popularity as a new medium of communication has resulted in changes in use of traditional media. The purpose of this study was to better understand the uses of online news compared with news use via traditional media. In light of the niche theory and the theory of uses and gratifications, a new medium survives, grows, competes, and prospers by providing utility or gratification to consumers. In doing so, it may have effects on existing media by providing new solutions to old needs or to more contemporary needs. Data were collected in a telephone survey with 211 respondents in the Columbus, Ohio (Franklin County), metropolitan area. The results clearly indicate that the Internet has a competitive displacement effect on traditional media in the daily news domain with the largest displacements occurring for television and newspapers. The findings also show that there is a moderately high degree of overlap or similarity between the niches of the Internet and the traditional media on the gratification-opportunities dimension. In addition, the results suggest that the Internet has the broadest niche on the gratification opportunities dimension, providing users satisfaction with more needs than any of the traditional media on this dimension.

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A new wave of terrestrial lidar scanners, optimized for rapid scanning and portability, such as the Compact Biomass Lidar (CBL), enable and improve observations of structure across a range of important ecosystems. We performed studies with the CBL in temperate and tropical forests, caves, salt marshes and coastal areas subject to erosion. By facilitating additional scanning points, and therefore view angles, this new class of terrestrial lidar alters observation coverage within samples, potentially reducing uncertainty in estimates of ecosystem properties. The CBL has proved competent at reconstructing trees and mangrove roots using the same cylinder-based Quantitative Structure Models commonly utilized for data from more capable instruments (Raumonen et al. 2013). For tropical trees with morphologies that challenge standard reconstruction techniques, such as the buttressed roots of Ceiba trees and the multiple stems of strangler figs, the CBL was able to provide the versatility and the speed of deployment needed to fully characterize their unique features. For geomorphological features, the deployment flexibility of the CBL enabled sampling from optimal view-angles, including from a novel suspension system for sampling salt marsh creeks. Overall, the practical aspects of these instruments, which improve deployment logistics, and therefore data acquisition rate, are shown to be emerging capabilities, greatly increasing the potential for observation, particularly in highly temporally dynamic, inaccessible and geometrically complex ecosystems. In order to better analyze information quality across these diverse and challenging ecosystems, we also provide a novel and much-needed conceptual framework, the microstate model, to characterize and mitigate uncertainties in terrestrial lidar observations.